<div class="aloha-block"><p>Paragraph</p><h1>Header</h1></div>
<p>Paragraph</p>
<div class="aloha-block"><b><i>nested</i></b></div>
<h1>Header</h1>
<div class="aloha-block"><h1>Header <b><i>nested</i></b></h1></div>